[Actions] Fix nightly workflow changes detection.

.github/utils/bump_nightly.py

@@ -26,7 +26,7 @@ if __name__ == "__main__":
         exit(-1)
 
     with requests.get(
-        f"https://api.github.com/repos/{repo}/actions/runs?per_page=1&status=success"
+        f"https://api.github.com/repos/{repo}/actions/runs?per_page=5&status=success"
     ) as r:
         data = json.loads(r.text)
         runs = [run for run in data["workflow_runs"] if run["head_sha"] == sha]

.github/workflows/build-nightly-apk.yml

@@ -46,7 +46,7 @@ jobs:
     runs-on: self-hosted
     needs:
       - prepare
-    if: needs.prepare.outputs.hasNewChanges
+    if: ${{ needs.prepare.outputs.hasNewChanges == 'true' }}
     outputs:
       androidHome: ${{ env.ANDROID_HOME }}
       androidSdkRoot: ${{ env.ANDROID_SDK_ROOT }}